Lysimachus was a prominent general and one of the successors of Alexander the Great. After Alexander's death in 323 BCE, he became one of the Diadochi, the leaders who fought for control over the vast empire. Lysimachus was known for his military skills and played a significant role in various battles, eventually becoming the ruler of Thrace. In 305 BCE, Lysimachus declared himself king, establishing the Lysimachid dynasty. He expanded his territory through conquests and alliances, but his reign faced challenges from rival leaders, including Seleucus I and Ptolemy I. Ultimately, he was defeated in battle in 281 BCE, marking the end of his rule.